refactor(cli): update animation cmd names

This commit ensures that the UpdateFocusedWindowBorder
WindowManagerEvent which is handled in process_event is used to position
the mouse correctly on the moved window once the animation has been
completed.

A pending clippy lint in animation.rs has also been addressed.

komorebi-core/src/animation.rs

@@ -0,0 +1,43 @@
+use clap::ValueEnum;
+use schemars::JsonSchema;
+use serde::Deserialize;
+use serde::Serialize;
+use strum::Display;
+use strum::EnumString;
+
+#[derive(
+    Copy, Clone, Debug, Serialize, Deserialize, Display, EnumString, ValueEnum, JsonSchema,
+)]
+#[strum(serialize_all = "snake_case")]
+pub enum EaseEnum {
+    Linear,
+    EaseInSine,
+    EaseOutSine,
+    EaseInOutSine,
+    EaseInQuad,
+    EaseOutQuad,
+    EaseInOutQuad,
+    EaseInCubic,
+    EaseInOutCubic,
+    EaseInQuart,
+    EaseOutQuart,
+    EaseInOutQuart,
+    EaseInQuint,
+    EaseOutQuint,
+    EaseInOutQuint,
+    EaseInExpo,
+    EaseOutExpo,
+    EaseInOutExpo,
+    EaseInCirc,
+    EaseOutCirc,
+    EaseInOutCirc,
+    EaseInBack,
+    EaseOutBack,
+    EaseInOutBack,
+    EaseInElastic,
+    EaseOutElastic,
+    EaseInOutElastic,
+    EaseInBounce,
+    EaseOutBounce,
+    EaseInOutBounce,
+}

komorebi-core/src/lib.rs

@@ -14,6 +14,7 @@ use serde::Serialize;
 use strum::Display;
 use strum::EnumString;
 
+pub use animation::EaseEnum;
 pub use arrangement::Arrangement;
 pub use arrangement::Axis;
 pub use custom_layout::CustomLayout;
@@ -24,6 +25,7 @@ pub use layout::Layout;
 pub use operation_direction::OperationDirection;
 pub use rect::Rect;
 
+pub mod animation;
 pub mod arrangement;
 pub mod config_generation;
 pub mod custom_layout;
@@ -127,6 +129,9 @@ pub enum SocketMessage {
     WatchConfiguration(bool),
     CompleteConfiguration,
     AltFocusHack(bool),
+    Animation(bool),
+    AnimationDuration(u64),
+    AnimationEase(EaseEnum),
     ActiveWindowBorder(bool),
     ActiveWindowBorderColour(WindowKind, u32, u32, u32),
     ActiveWindowBorderWidth(i32),

komorebi/src/animation.rs

@@ -0,0 +1,510 @@
+use color_eyre::Result;
+use komorebi_core::EaseEnum;
+use komorebi_core::Rect;
+
+use schemars::JsonSchema;
+
+use std::f64::consts::PI;
+use std::time::Duration;
+use std::time::Instant;
+
+use crate::ANIMATION_EASE;
+
+pub trait Ease {
+    fn evaluate(t: f64) -> f64;
+}
+
+pub struct Linear;
+
+impl Ease for Linear {
+    fn evaluate(t: f64) -> f64 {
+        t
+    }
+}
+
+pub struct EaseInSine;
+
+impl Ease for EaseInSine {
+    fn evaluate(t: f64) -> f64 {
+        1.0 - f64::cos((t * PI) / 2.0)
+    }
+}
+
+pub struct EaseOutSine;
+
+impl Ease for EaseOutSine {
+    fn evaluate(t: f64) -> f64 {
+        f64::sin((t * PI) / 2.0)
+    }
+}
+
+pub struct EaseInOutSine;
+
+impl Ease for EaseInOutSine {
+    fn evaluate(t: f64) -> f64 {
+        -(f64::cos(PI * t) - 1.0) / 2.0
+    }
+}
+
+pub struct EaseInQuad;
+
+impl Ease for EaseInQuad {
+    fn evaluate(t: f64) -> f64 {
+        t * t
+    }
+}
+
+pub struct EaseOutQuad;
+
+impl Ease for EaseOutQuad {
+    fn evaluate(t: f64) -> f64 {
+        (1.0 - t).mul_add(-1.0 - t, 1.0)
+    }
+}
+
+pub struct EaseInOutQuad;
+
+impl Ease for EaseInOutQuad {
+    fn evaluate(t: f64) -> f64 {
+        if t < 0.5 {
+            2.0 * t * t
+        } else {
+            1.0 - (-2.0f64).mul_add(t, 2.0).powi(2) / 2.0
+        }
+    }
+}
+
+pub struct EaseInCubic;
+
+impl Ease for EaseInCubic {
+    fn evaluate(t: f64) -> f64 {
+        t * t * t
+    }
+}
+
+pub struct EaseOutCubic;
+
+impl Ease for EaseOutCubic {
+    fn evaluate(t: f64) -> f64 {
+        1.0 - (1.0 - t).powi(3)
+    }
+}
+
+pub struct EaseInOutCubic;
+
+impl Ease for EaseInOutCubic {
+    fn evaluate(t: f64) -> f64 {
+        if t < 0.5 {
+            4.0 * t * t * t
+        } else {
+            1.0 - (-2.0f64).mul_add(t, 2.0).powi(3) / 2.0
+        }
+    }
+}
+
+pub struct EaseInQuart;
+
+impl Ease for EaseInQuart {
+    fn evaluate(t: f64) -> f64 {
+        t * t * t * t
+    }
+}
+
+pub struct EaseOutQuart;
+
+impl Ease for EaseOutQuart {
+    fn evaluate(t: f64) -> f64 {
+        1.0 - (1.0 - t).powi(4)
+    }
+}
+
+pub struct EaseInOutQuart;
+
+impl Ease for EaseInOutQuart {
+    fn evaluate(t: f64) -> f64 {
+        if t < 0.5 {
+            8.0 * t * t * t * t
+        } else {
+            1.0 - (-2.0f64).mul_add(t, 2.0).powi(4) / 2.0
+        }
+    }
+}
+
+pub struct EaseInQuint;
+
+impl Ease for EaseInQuint {
+    fn evaluate(t: f64) -> f64 {
+        t * t * t * t * t
+    }
+}
+
+pub struct EaseOutQuint;
+
+impl Ease for EaseOutQuint {
+    fn evaluate(t: f64) -> f64 {
+        1.0 - (1.0 - t).powi(5)
+    }
+}
+
+pub struct EaseInOutQuint;
+
+impl Ease for EaseInOutQuint {
+    fn evaluate(t: f64) -> f64 {
+        if t < 0.5 {
+            16.0 * t * t * t * t
+        } else {
+            1.0 - (-2.0f64).mul_add(t, 2.0).powi(5) / 2.0
+        }
+    }
+}
+
+pub struct EaseInExpo;
+
+impl Ease for EaseInExpo {
+    fn evaluate(t: f64) -> f64 {
+        if t == 0.0 {
+            return t;
+        }
+
+        10.0f64.mul_add(t, -10.0).exp2()
+    }
+}
+
+pub struct EaseOutExpo;
+
+impl Ease for EaseOutExpo {
+    fn evaluate(t: f64) -> f64 {
+        if (t - 1.0).abs() < f64::EPSILON {
+            return t;
+        }
+
+        1.0 - (-10.0 * t).exp2()
+    }
+}
+
+pub struct EaseInOutExpo;
+
+impl Ease for EaseInOutExpo {
+    fn evaluate(t: f64) -> f64 {
+        if t == 0.0 || (t - 1.0).abs() < f64::EPSILON {
+            return t;
+        }
+
+        if t < 0.5 {
+            20.0f64.mul_add(t, -10.0).exp2() / 2.0
+        } else {
+            (2.0 - (-20.0f64).mul_add(t, 10.0).exp2()) / 2.0
+        }
+    }
+}
+
+pub struct EaseInCirc;
+
+impl Ease for EaseInCirc {
+    fn evaluate(t: f64) -> f64 {
+        1.0 - f64::sqrt(t.mul_add(-t, 1.0))
+    }
+}
+
+pub struct EaseOutCirc;
+
+impl Ease for EaseOutCirc {
+    fn evaluate(t: f64) -> f64 {
+        f64::sqrt((t - 1.0).mul_add(-(t - 1.0), 1.0))
+    }
+}
+
+pub struct EaseInOutCirc;
+
+impl Ease for EaseInOutCirc {
+    fn evaluate(t: f64) -> f64 {
+        if t < 0.5 {
+            (1.0 - f64::sqrt((2.0 * t).mul_add(-(2.0 * t), 1.0))) / 2.0
+        } else {
+            (f64::sqrt(
+                (-2.0f64)
+                    .mul_add(t, 2.0)
+                    .mul_add(-(-2.0f64).mul_add(t, 2.0), 1.0),
+            ) + 1.0)
+                / 2.0
+        }
+    }
+}
+
+pub struct EaseInBack;
+
+impl Ease for EaseInBack {
+    fn evaluate(t: f64) -> f64 {
+        let c1 = 1.70158;
+        let c3 = c1 + 1.0;
+
+        (c3 * t * t).mul_add(t, -c1 * t * t)
+    }
+}
+
+pub struct EaseOutBack;
+
+impl Ease for EaseOutBack {
+    fn evaluate(t: f64) -> f64 {
+        let c1: f64 = 1.70158;
+        let c3: f64 = c1 + 1.0;
+
+        c1.mul_add((t - 1.0).powi(2), c3.mul_add((t - 1.0).powi(3), 1.0))
+    }
+}
+
+pub struct EaseInOutBack;
+
+impl Ease for EaseInOutBack {
+    fn evaluate(t: f64) -> f64 {
+        let c1: f64 = 1.70158;
+        let c2: f64 = c1 * 1.525;
+
+        if t < 0.5 {
+            ((2.0 * t).powi(2) * ((c2 + 1.0) * 2.0).mul_add(t, -c2)) / 2.0
+        } else {
+            ((2.0f64.mul_add(t, -2.0))
+                .powi(2)
+                .mul_add((c2 + 1.0).mul_add(t.mul_add(2.0, -2.0), c2), 2.0))
+                / 2.0
+        }
+    }
+}
+
+pub struct EaseInElastic;
+
+impl Ease for EaseInElastic {
+    fn evaluate(t: f64) -> f64 {
+        if (t - 1.0).abs() < f64::EPSILON || t == 0.0 {
+            return t;
+        }
+
+        let c4 = (2.0 * PI) / 3.0;
+
+        -(10.0f64.mul_add(t, -10.0).exp2()) * f64::sin(t.mul_add(10.0, -10.75) * c4)
+    }
+}
+
+pub struct EaseOutElastic;
+
+impl Ease for EaseOutElastic {
+    fn evaluate(t: f64) -> f64 {
+        if (t - 1.0).abs() < f64::EPSILON || t == 0.0 {
+            return t;
+        }
+
+        let c4 = (2.0 * PI) / 3.0;
+
+        (-10.0 * t)
+            .exp2()
+            .mul_add(f64::sin(t.mul_add(10.0, -0.75) * c4), 1.0)
+    }
+}
+
+pub struct EaseInOutElastic;
+
+impl Ease for EaseInOutElastic {
+    fn evaluate(t: f64) -> f64 {
+        if (t - 1.0).abs() < f64::EPSILON || t == 0.0 {
+            return t;
+        }
+
+        let c5 = (2.0 * PI) / 4.5;
+
+        if t < 0.5 {
+            -(20.0f64.mul_add(t, -10.0).exp2() * f64::sin(20.0f64.mul_add(t, -11.125) * c5)) / 2.0
+        } else {
+            ((-20.0f64).mul_add(t, 10.0).exp2() * f64::sin(20.0f64.mul_add(t, -11.125) * c5)) / 2.0
+                + 1.0
+        }
+    }
+}
+
+pub struct EaseInBounce;
+
+impl Ease for EaseInBounce {
+    fn evaluate(t: f64) -> f64 {
+        1.0 - EaseOutBounce::evaluate(1.0 - t)
+    }
+}
+
+pub struct EaseOutBounce;
+
+impl Ease for EaseOutBounce {
+    fn evaluate(t: f64) -> f64 {
+        let mut time = t;
+        let n1 = 7.5625;
+        let d1 = 2.75;
+
+        if t < 1.0 / d1 {
+            n1 * time * time
+        } else if time < 2.0 / d1 {
+            time -= 1.5 / d1;
+            (n1 * time).mul_add(time, 0.75)
+        } else if time < 2.5 / d1 {
+            time -= 2.25 / d1;
+            (n1 * time).mul_add(time, 0.9375)
+        } else {
+            time -= 2.625 / d1;
+            (n1 * time).mul_add(time, 0.984_375)
+        }
+    }
+}
+
+pub struct EaseInOutBounce;
+
+impl Ease for EaseInOutBounce {
+    fn evaluate(t: f64) -> f64 {
+        if t < 0.5 {
+            (1.0 - EaseOutBounce::evaluate(2.0f64.mul_add(-t, 1.0))) / 2.0
+        } else {
+            (1.0 + EaseOutBounce::evaluate(2.0f64.mul_add(t, -1.0))) / 2.0
+        }
+    }
+}
+fn apply_ease_func(t: f64) -> f64 {
+    let ease = *ANIMATION_EASE.lock();
+
+    match ease {
+        EaseEnum::Linear => Linear::evaluate(t),
+        EaseEnum::EaseInSine => EaseInSine::evaluate(t),
+        EaseEnum::EaseOutSine => EaseOutSine::evaluate(t),
+        EaseEnum::EaseInOutSine => EaseInOutSine::evaluate(t),
+        EaseEnum::EaseInQuad => EaseInQuad::evaluate(t),
+        EaseEnum::EaseOutQuad => EaseOutQuad::evaluate(t),
+        EaseEnum::EaseInOutQuad => EaseInOutQuad::evaluate(t),
+        EaseEnum::EaseInCubic => EaseInCubic::evaluate(t),
+        EaseEnum::EaseInOutCubic => EaseInOutCubic::evaluate(t),
+        EaseEnum::EaseInQuart => EaseInQuart::evaluate(t),
+        EaseEnum::EaseOutQuart => EaseOutQuart::evaluate(t),
+        EaseEnum::EaseInOutQuart => EaseInOutQuart::evaluate(t),
+        EaseEnum::EaseInQuint => EaseInQuint::evaluate(t),
+        EaseEnum::EaseOutQuint => EaseOutQuint::evaluate(t),
+        EaseEnum::EaseInOutQuint => EaseInOutQuint::evaluate(t),
+        EaseEnum::EaseInExpo => EaseInExpo::evaluate(t),
+        EaseEnum::EaseOutExpo => EaseOutExpo::evaluate(t),
+        EaseEnum::EaseInOutExpo => EaseInOutExpo::evaluate(t),
+        EaseEnum::EaseInCirc => EaseInCirc::evaluate(t),
+        EaseEnum::EaseOutCirc => EaseOutCirc::evaluate(t),
+        EaseEnum::EaseInOutCirc => EaseInOutCirc::evaluate(t),
+        EaseEnum::EaseInBack => EaseInBack::evaluate(t),
+        EaseEnum::EaseOutBack => EaseOutBack::evaluate(t),
+        EaseEnum::EaseInOutBack => EaseInOutBack::evaluate(t),
+        EaseEnum::EaseInElastic => EaseInElastic::evaluate(t),
+        EaseEnum::EaseOutElastic => EaseOutElastic::evaluate(t),
+        EaseEnum::EaseInOutElastic => EaseInOutElastic::evaluate(t),
+        EaseEnum::EaseInBounce => EaseInBounce::evaluate(t),
+        EaseEnum::EaseOutBounce => EaseOutBounce::evaluate(t),
+        EaseEnum::EaseInOutBounce => EaseInOutBounce::evaluate(t),
+    }
+}
+
+#[derive(Debug, Default, Clone, Copy, JsonSchema)]
+pub struct Animation {
+    // is_cancel: AtomicBool,
+    // pub in_progress: AtomicBool,
+    is_cancel: bool,
+    pub in_progress: bool,
+}
+
+// impl Default for Animation {
+//     fn default() -> Self {
+//         Animation {
+//             // I'm not sure if this is the right way to do it
+//             // I've tried to use Arc<Mutex<bool>> but it dooes not implement Copy trait
+//             // and I dont want to rewrite everything cause I'm not experienced with rust
+//             // Down here you can see the idea I've tried to achive like in any other OOP language
+//             // My thought is that in order to prevent Google Chrome breaking render window
+//             // I need to cancel animation if user starting new window movement. So window stops
+//             // moving at one point and then fires new animation.
+//             // But my approach does not work because of rust borrowing rules and wired pointers
+//             // lifetime annotation that I dont know how to use.
+//             is_cancel: false,
+//             in_progress: false,
+//             // is_cancel: AtomicBool::new(false),
+//             // in_progress: AtomicBool::new(false),
+//         }
+//     }
+// }
+
+impl Animation {
+    pub fn cancel(&mut self) {
+        if !self.in_progress {
+            return;
+        }
+
+        self.is_cancel = true;
+        let max_duration = Duration::from_secs(1);
+        let spent_duration = Instant::now();
+
+        while self.in_progress {
+            if spent_duration.elapsed() >= max_duration {
+                self.in_progress = false;
+            }
+
+            std::thread::sleep(Duration::from_millis(16));
+        }
+    }
+
+    #[allow(clippy::cast_possible_truncation)]
+    pub fn lerp(x: i32, new_x: i32, t: f64) -> i32 {
+        let time = apply_ease_func(t);
+        f64::from(new_x - x).mul_add(time, f64::from(x)) as i32
+    }
+
+    pub fn lerp_rect(original_rect: &Rect, new_rect: &Rect, t: f64) -> Rect {
+        Rect {
+            left: Self::lerp(original_rect.left, new_rect.left, t),
+            top: Self::lerp(original_rect.top, new_rect.top, t),
+            right: Self::lerp(original_rect.right, new_rect.right, t),
+            bottom: Self::lerp(original_rect.bottom, new_rect.bottom, t),
+        }
+    }
+
+    #[allow(clippy::cast_precision_loss)]
+    pub fn animate(
+        &mut self,
+        duration: Duration,
+        mut f: impl FnMut(f64) -> Result<()>,
+    ) -> Result<()> {
+        self.in_progress = true;
+        // set target frame time to match 240 fps (my max refresh rate of monitor)
+        // probably not the best way to do it is take actual monitor refresh rate
+        // or make it configurable
+        let target_frame_time = Duration::from_millis(1000 / 240);
+        let mut progress = 0.0;
+        let animation_start = Instant::now();
+
+        // start animation
+        while progress < 1.0 {
+            // check if animation is cancelled
+            if self.is_cancel {
+                // cancel animation
+                // set all flags
+                self.is_cancel = !self.is_cancel;
+                self.in_progress = false;
+                return Ok(());
+            }
+
+            let tick_start = Instant::now();
+            // calculate progress
+            progress = animation_start.elapsed().as_millis() as f64 / duration.as_millis() as f64;
+            f(progress).ok();
+
+            // sleep until next frame
+            while tick_start.elapsed() < target_frame_time {
+                std::thread::sleep(target_frame_time - tick_start.elapsed());
+            }
+        }
+
+        self.in_progress = false;
+
+        // limit progress to 1.0 if animation took longer
+        if progress > 1.0 {
+            progress = 1.0;
+        }
+
+        // process animation for 1.0 to set target position
+        f(progress)
+    }
+}

komorebi/src/main.rs

@@ -16,6 +16,7 @@ use std::sync::atomic::AtomicBool;
 use std::sync::atomic::AtomicI32;
 use std::sync::atomic::AtomicIsize;
 use std::sync::atomic::AtomicU32;
+use std::sync::atomic::AtomicU64;
 use std::sync::atomic::Ordering;
 use std::sync::Arc;
 #[cfg(feature = "deadlock_detection")]
@@ -26,6 +27,7 @@ use color_eyre::Result;
 use crossbeam_channel::Receiver;
 use crossbeam_channel::Sender;
 use crossbeam_utils::Backoff;
+use komorebi_core::EaseEnum;
 use lazy_static::lazy_static;
 use os_info::Version;
 #[cfg(feature = "deadlock_detection")]
@@ -65,6 +67,7 @@ use crate::windows_api::WindowsApi;
 #[macro_use]
 mod ring;
 
+mod animation;
 mod border;
 mod com;
 mod container;
@@ -214,6 +217,8 @@ lazy_static! {
     static ref BORDER_OFFSET: Arc<Mutex<Option<Rect>>> =
         Arc::new(Mutex::new(None));
 
+    static ref ANIMATION_EASE: Arc<Mutex<EaseEnum>> = Arc::new(Mutex::new(EaseEnum::Linear));
+
     // Use app-specific titlebar removal options where possible
     // eg. Windows Terminal, IntelliJ IDEA, Firefox
     static ref NO_TITLEBAR: Arc<Mutex<Vec<String>>> = Arc::new(Mutex::new(vec![]));
@@ -237,6 +242,8 @@ pub static BORDER_WIDTH: AtomicI32 = AtomicI32::new(20);
 // 0 0 0 aka pure black, I doubt anyone will want this as a border colour
 pub const TRANSPARENCY_COLOUR: u32 = 0;
 pub static REMOVE_TITLEBARS: AtomicBool = AtomicBool::new(false);
+pub static ANIMATION_ENABLED: AtomicBool = AtomicBool::new(false);
+pub static ANIMATION_DURATION: AtomicU64 = AtomicU64::new(250);
 
 pub static HIDDEN_HWND: AtomicIsize = AtomicIsize::new(0);
 

komorebi/src/process_command.rs

@@ -47,6 +47,9 @@ use crate::windows_api::WindowsApi;
 use crate::Notification;
 use crate::NotificationEvent;
 use crate::ALT_FOCUS_HACK;
+use crate::ANIMATION_DURATION;
+use crate::ANIMATION_EASE;
+use crate::ANIMATION_ENABLED;
 use crate::BORDER_COLOUR_CURRENT;
 use crate::BORDER_COLOUR_MONOCLE;
 use crate::BORDER_COLOUR_SINGLE;
@@ -1140,6 +1143,15 @@ impl WindowManager {
                     self.hide_border()?;
                 }
             }
+            SocketMessage::Animation(enable) => {
+                ANIMATION_ENABLED.store(enable, Ordering::SeqCst);
+            }
+            SocketMessage::AnimationDuration(duration) => {
+                ANIMATION_DURATION.store(duration, Ordering::SeqCst);
+            }
+            SocketMessage::AnimationEase(ease) => {
+                *ANIMATION_EASE.lock() = ease;
+            }
             SocketMessage::ActiveWindowBorderColour(kind, r, g, b) => {
                 match kind {
                     WindowKind::Single => {
@@ -1295,7 +1307,7 @@ impl WindowManager {
             | SocketMessage::CycleMoveWindow(_)
             | SocketMessage::MoveWindow(_) => {
                 let foreground = WindowsApi::foreground_window()?;
-                let foreground_window = Window { hwnd: foreground };
+                let foreground_window = Window::new(foreground);
                 let mut rect = WindowsApi::window_rect(foreground_window.hwnd())?;
                 rect.top -= self.invisible_borders.bottom;
                 rect.bottom += self.invisible_borders.bottom;

komorebi/src/process_event.rs

@@ -515,7 +515,8 @@ impl WindowManager {
             WindowManagerEvent::DisplayChange(..)
             | WindowManagerEvent::MouseCapture(..)
             | WindowManagerEvent::Cloak(..)
-            | WindowManagerEvent::Uncloak(..) => {}
+            | WindowManagerEvent::Uncloak(..)
+            | WindowManagerEvent::UpdateFocusedWindowBorder(..) => {}
         };
 
         if *self.focused_workspace()?.tile() && BORDER_ENABLED.load(Ordering::SeqCst) {
@@ -529,7 +530,8 @@ impl WindowManager {
                 | WindowManagerEvent::Show(_, window)
                 | WindowManagerEvent::FocusChange(_, window)
                 | WindowManagerEvent::Hide(_, window)
-                | WindowManagerEvent::Minimize(_, window) => {
+                | WindowManagerEvent::Minimize(_, window)
+                | WindowManagerEvent::UpdateFocusedWindowBorder(window) => {
                     let border = Border::from(BORDER_HWND.load(Ordering::SeqCst));
                     let mut target_window = None;
                     let mut target_window_is_monocle = false;
@@ -595,6 +597,10 @@ impl WindowManager {
                         WindowsApi::invalidate_border_rect()?;
                         border.set_position(target_window, &self.invisible_borders, activate)?;
 
+                        if matches!(event, WindowManagerEvent::UpdateFocusedWindowBorder(_)) {
+                            window.focus(self.mouse_follows_focus)?;
+                        }
+
                         if activate {
                             BORDER_HIDDEN.store(false, Ordering::SeqCst);
                         }

komorebi/src/static_config.rs

@@ -7,6 +7,9 @@ use crate::window_manager_event::WindowManagerEvent;
 use crate::windows_api::WindowsApi;
 use crate::workspace::Workspace;
 use crate::ALT_FOCUS_HACK;
+use crate::ANIMATION_DURATION;
+use crate::ANIMATION_EASE;
+use crate::ANIMATION_ENABLED;
 use crate::BORDER_COLOUR_CURRENT;
 use crate::BORDER_COLOUR_MONOCLE;
 use crate::BORDER_COLOUR_SINGLE;
@@ -39,6 +42,7 @@ use komorebi_core::config_generation::MatchingStrategy;
 use komorebi_core::resolve_home_path;
 use komorebi_core::ApplicationIdentifier;
 use komorebi_core::DefaultLayout;
+use komorebi_core::EaseEnum;
 use komorebi_core::FocusFollowsMouseImplementation;
 use komorebi_core::HidingBehaviour;
 use komorebi_core::Layout;
@@ -312,6 +316,15 @@ pub struct StaticConfig {
     /// Set monitor index preferences
     #[serde(skip_serializing_if = "Option::is_none")]
     pub monitor_index_preferences: Option<HashMap<usize, Rect>>,
+    /// Enable or disable animations (default: false)
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub animation: Option<bool>,
+    /// Set the animation ease function (default: Linear)
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub animation_ease: Option<EaseEnum>,
+    /// Set the animation duration in ms (default: 250)
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub animation_duration: Option<u64>,
 }
 
 impl From<&WindowManager> for StaticConfig {
@@ -432,6 +445,9 @@ impl From<&WindowManager> for StaticConfig {
             layered_applications: None,
             object_name_change_applications: None,
             monitor_index_preferences: Option::from(MONITOR_INDEX_PREFERENCES.lock().clone()),
+            animation: Option::from(ANIMATION_ENABLED.load(Ordering::SeqCst)),
+            animation_duration: Option::from(ANIMATION_DURATION.load(Ordering::SeqCst)),
+            animation_ease: Option::from(*ANIMATION_EASE.lock()),
         }
     }
 }
@@ -449,6 +465,19 @@ impl StaticConfig {
             *window_hiding_behaviour = behaviour;
         }
 
+        if let Some(animation) = self.animation {
+            ANIMATION_ENABLED.store(animation, Ordering::SeqCst);
+        }
+
+        if let Some(duration) = self.animation_duration {
+            ANIMATION_DURATION.store(duration, Ordering::SeqCst);
+        }
+
+        if let Some(ease) = self.animation_ease {
+            let mut animation_ease = ANIMATION_EASE.lock();
+            *animation_ease = ease;
+        }
+
         if let Some(hack) = self.alt_focus_hack {
             ALT_FOCUS_HACK.store(hack, Ordering::SeqCst);
         }

komorebi/src/window.rs

@@ -1,10 +1,14 @@
 use crate::com::SetCloak;
+use crate::winevent_listener::WINEVENT_CALLBACK_CHANNEL;
+use crate::ANIMATION_DURATION;
+use crate::ANIMATION_ENABLED;
 use std::collections::HashMap;
 use std::convert::TryFrom;
 use std::fmt::Display;
 use std::fmt::Formatter;
 use std::fmt::Write as _;
 use std::sync::atomic::Ordering;
+use std::time::Duration;
 
 use color_eyre::eyre::anyhow;
 use color_eyre::Result;
@@ -25,6 +29,7 @@ use komorebi_core::ApplicationIdentifier;
 use komorebi_core::HidingBehaviour;
 use komorebi_core::Rect;
 
+use crate::animation::Animation;
 use crate::styles::ExtendedWindowStyle;
 use crate::styles::WindowStyle;
 use crate::window_manager_event::WindowManagerEvent;
@@ -44,6 +49,7 @@ use crate::WSL2_UI_PROCESSES;
 #[derive(Debug, Clone, Copy, JsonSchema)]
 pub struct Window {
     pub(crate) hwnd: isize,
+    animation: Animation,
 }
 
 impl Display for Window {
@@ -103,6 +109,14 @@ impl Serialize for Window {
 }
 
 impl Window {
+    // for instantiation of animation struct
+    pub fn new(hwnd: isize) -> Self {
+        Self {
+            hwnd,
+            animation: Animation::default(),
+        }
+    }
+
     pub const fn hwnd(self) -> HWND {
         HWND(self.hwnd)
     }
@@ -122,6 +136,47 @@ impl Window {
             true,
         )
     }
+    pub fn animate_position(&mut self, layout: &Rect, top: bool) -> Result<()> {
+        let hwnd = self.hwnd();
+        let curr_rect = WindowsApi::window_rect(hwnd).unwrap();
+
+        if curr_rect.left == layout.left
+            && curr_rect.top == layout.top
+            && curr_rect.bottom == layout.bottom
+            && curr_rect.right == layout.right
+        {
+            WindowsApi::position_window(hwnd, layout, top)
+        } else {
+            let target_rect = *layout;
+            let duration = Duration::from_millis(ANIMATION_DURATION.load(Ordering::SeqCst));
+            let mut animation = self.animation;
+
+            let self_copied = *self;
+            std::thread::spawn(move || {
+                animation.animate(duration, |progress: f64| {
+                    let new_rect = Animation::lerp_rect(&curr_rect, &target_rect, progress);
+                    if progress < 1.0 {
+                        // using MoveWindow because it runs faster than SetWindowPos
+                        // so animation have more fps and feel smoother
+                        WindowsApi::move_window(hwnd, &new_rect, true)?;
+                    } else {
+                        WindowsApi::position_window(hwnd, &new_rect, top)?;
+
+                        if WindowsApi::foreground_window()? == self_copied.hwnd {
+                            WINEVENT_CALLBACK_CHANNEL
+                                .lock()
+                                .0
+                                .send(WindowManagerEvent::UpdateFocusedWindowBorder(self_copied))?;
+                        }
+                    }
+
+                    Ok(())
+                })
+            });
+
+            Ok(())
+        }
+    }
 
     pub fn set_position(
         &mut self,
@@ -154,7 +209,17 @@ impl Window {
             rect.bottom += invisible_borders.bottom;
         }
 
-        WindowsApi::position_window(self.hwnd(), &rect, top)
+        if ANIMATION_ENABLED.load(Ordering::SeqCst) {
+            // check if animation is in progress
+            if self.animation.in_progress {
+                // wait for cancel animation
+                self.animation.cancel();
+            }
+
+            self.animate_position(&rect, top)
+        } else {
+            WindowsApi::position_window(self.hwnd(), &rect, top)
+        }
     }
 
     pub fn hide(self) {

komorebi/src/window_manager.rs

@@ -217,7 +217,7 @@ impl WindowManager {
     #[tracing::instrument(skip(self))]
     pub fn show_border(&self) -> Result<()> {
         let foreground = WindowsApi::foreground_window()?;
-        let foreground_window = Window { hwnd: foreground };
+        let foreground_window = Window::new(foreground);
         let mut rect = WindowsApi::window_rect(foreground_window.hwnd())?;
         rect.top -= self.invisible_borders.bottom;
         rect.bottom += self.invisible_borders.bottom;
@@ -589,7 +589,7 @@ impl WindowManager {
 
             // Hide the window we are about to remove if it is on the currently focused workspace
             if op.is_origin(focused_monitor_idx, focused_workspace_idx) {
-                Window { hwnd: op.hwnd }.hide();
+                Window::new(op.hwnd).hide();
                 should_update_focused_workspace = true;
             }
 
@@ -619,7 +619,7 @@ impl WindowManager {
                 .get_mut(op.target_workspace_idx)
                 .ok_or_else(|| anyhow!("there is no workspace with that index"))?;
 
-            target_workspace.new_container_for_window(Window { hwnd: op.hwnd });
+            target_workspace.new_container_for_window(Window::new(op.hwnd));
         }
 
         // Only re-tile the focused workspace if we need to
@@ -663,14 +663,14 @@ impl WindowManager {
     #[tracing::instrument(skip(self))]
     pub fn manage_focused_window(&mut self) -> Result<()> {
         let hwnd = WindowsApi::foreground_window()?;
-        let event = WindowManagerEvent::Manage(Window { hwnd });
+        let event = WindowManagerEvent::Manage(Window::new(hwnd));
         Ok(WINEVENT_CALLBACK_CHANNEL.lock().0.send(event)?)
     }
 
     #[tracing::instrument(skip(self))]
     pub fn unmanage_focused_window(&mut self) -> Result<()> {
         let hwnd = WindowsApi::foreground_window()?;
-        let event = WindowManagerEvent::Unmanage(Window { hwnd });
+        let event = WindowManagerEvent::Unmanage(Window::new(hwnd));
         Ok(WINEVENT_CALLBACK_CHANNEL.lock().0.send(event)?)
     }
 
@@ -708,13 +708,14 @@ impl WindowManager {
             ];
 
             if !known_hwnd {
-                let class = Window { hwnd }.class()?;
+                let class = Window::new(hwnd).class()?;
                 // Some applications (Electron/Chromium-based, explorer) have (invisible?) overlays
                 // windows that we need to look beyond to find the actual window to raise
                 if overlay_classes.contains(&class) {
                     for monitor in self.monitors() {
                         for workspace in monitor.workspaces() {
-                            if let Some(exe_hwnd) = workspace.hwnd_from_exe(&Window { hwnd }.exe()?)
+                            if let Some(exe_hwnd) =
+                                workspace.hwnd_from_exe(&Window::new(hwnd).exe()?)
                             {
                                 hwnd = exe_hwnd;
                                 known_hwnd = true;
@@ -725,11 +726,11 @@ impl WindowManager {
             }
 
             if known_hwnd {
-                let event = WindowManagerEvent::Raise(Window { hwnd });
+                let event = WindowManagerEvent::Raise(Window::new(hwnd));
                 self.has_pending_raise_op = true;
                 Ok(WINEVENT_CALLBACK_CHANNEL.lock().0.send(event)?)
             } else {
-                tracing::debug!("not raising unknown window: {}", Window { hwnd });
+                tracing::debug!("not raising unknown window: {}", Window::new(hwnd,));
                 Ok(())
             }
         }
@@ -843,9 +844,7 @@ impl WindowManager {
             } else if let Ok(window) = self.focused_window_mut() {
                 window.focus(self.mouse_follows_focus)?;
             } else {
-                let desktop_window = Window {
-                    hwnd: WindowsApi::desktop_window()?,
-                };
+                let desktop_window = Window::new(WindowsApi::desktop_window()?);
 
                 let rect = self.focused_monitor_size()?;
                 WindowsApi::center_cursor_in_rect(&rect)?;

komorebi/src/window_manager_event.rs

@@ -27,6 +27,7 @@ pub enum WindowManagerEvent {
     Unmanage(Window),
     Raise(Window),
     DisplayChange(Window),
+    UpdateFocusedWindowBorder(Window),
 }
 
 impl Display for WindowManagerEvent {
@@ -77,6 +78,9 @@ impl Display for WindowManagerEvent {
             Self::DisplayChange(window) => {
                 write!(f, "DisplayChange (Window: {window})")
             }
+            Self::UpdateFocusedWindowBorder(window) => {
+                write!(f, "UpdateFocusedBorderWindow (Window: {window})")
+            }
         }
     }
 }
@@ -97,7 +101,8 @@ impl WindowManagerEvent {
             | Self::Raise(window)
             | Self::Manage(window)
             | Self::DisplayChange(window)
-            | Self::Unmanage(window) => window,
+            | Self::Unmanage(window)
+            | Self::UpdateFocusedWindowBorder(window) => window,
         }
     }
 

komorebi/src/windows_api.rs

@@ -81,6 +81,7 @@ use windows::Win32::UI::WindowsAndMessaging::GetWindowThreadProcessId;
 use windows::Win32::UI::WindowsAndMessaging::IsIconic;
 use windows::Win32::UI::WindowsAndMessaging::IsWindow;
 use windows::Win32::UI::WindowsAndMessaging::IsWindowVisible;
+use windows::Win32::UI::WindowsAndMessaging::MoveWindow;
 use windows::Win32::UI::WindowsAndMessaging::PostMessageW;
 use windows::Win32::UI::WindowsAndMessaging::RealGetWindowClassW;
 use windows::Win32::UI::WindowsAndMessaging::RegisterClassA;
@@ -354,6 +355,20 @@ impl WindowsApi {
         .process()
     }
 
+    pub fn move_window(hwnd: HWND, layout: &Rect, repaint: bool) -> Result<()> {
+        unsafe {
+            MoveWindow(
+                hwnd,
+                layout.left,
+                layout.top,
+                layout.right,
+                layout.bottom,
+                repaint,
+            )
+        }
+        .process()
+    }
+
     fn show_window(hwnd: HWND, command: SHOW_WINDOW_CMD) {
         // BOOL is returned but does not signify whether or not the operation was succesful
         // https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-showwindow

komorebi/src/windows_callbacks.rs

@@ -104,7 +104,7 @@ pub extern "system" fn enum_window(hwnd: HWND, lparam: LPARAM) -> BOOL {
     let is_minimized = WindowsApi::is_iconic(hwnd);
 
     if is_visible && is_window && !is_minimized {
-        let window = Window { hwnd: hwnd.0 };
+        let window = Window::new(hwnd.0);
 
         if let Ok(should_manage) = window.should_manage(None) {
             if should_manage {
@@ -132,7 +132,7 @@ pub extern "system" fn win_event_hook(
         return;
     }
 
-    let window = Window { hwnd: hwnd.0 };
+    let window = Window::new(hwnd.0);
 
     let winevent = unsafe { ::std::mem::transmute(event) };
     let event_type = match WindowManagerEvent::from_win_event(winevent, window) {
@@ -196,7 +196,7 @@ pub extern "system" fn hidden_window(
     unsafe {
         match message {
             WM_DISPLAYCHANGE => {
-                let event_type = WindowManagerEvent::DisplayChange(Window { hwnd: window.0 });
+                let event_type = WindowManagerEvent::DisplayChange(Window::new(window.0));
                 WINEVENT_CALLBACK_CHANNEL
                     .lock()
                     .0
@@ -211,7 +211,7 @@ pub extern "system" fn hidden_window(
                 if wparam.0 as u32 == SPI_SETWORKAREA.0
                     || wparam.0 as u32 == SPI_ICONVERTICALSPACING.0
                 {
-                    let event_type = WindowManagerEvent::DisplayChange(Window { hwnd: window.0 });
+                    let event_type = WindowManagerEvent::DisplayChange(Window::new(window.0));
                     WINEVENT_CALLBACK_CHANNEL
                         .lock()
                         .0
@@ -224,7 +224,7 @@ pub extern "system" fn hidden_window(
             WM_DEVICECHANGE => {
                 #[allow(clippy::cast_possible_truncation)]
                 if wparam.0 as u32 == DBT_DEVNODES_CHANGED {
-                    let event_type = WindowManagerEvent::DisplayChange(Window { hwnd: window.0 });
+                    let event_type = WindowManagerEvent::DisplayChange(Window::new(window.0));
                     WINEVENT_CALLBACK_CHANNEL
                         .lock()
                         .0

komorebi/src/workspace.rs

@@ -19,11 +19,15 @@ use komorebi_core::Layout;
 use komorebi_core::OperationDirection;
 use komorebi_core::Rect;
 
+use crate::border::Border;
 use crate::container::Container;
 use crate::ring::Ring;
 use crate::static_config::WorkspaceConfig;
 use crate::window::Window;
 use crate::windows_api::WindowsApi;
+use crate::ANIMATION_ENABLED;
+use crate::BORDER_HIDDEN;
+use crate::BORDER_HWND;
 use crate::DEFAULT_CONTAINER_PADDING;
 use crate::DEFAULT_WORKSPACE_PADDING;
 use crate::INITIAL_CONFIGURATION_LOADED;
@@ -244,6 +248,12 @@ impl Workspace {
         }
 
         if *self.tile() {
+            if ANIMATION_ENABLED.load(Ordering::SeqCst) {
+                let border = Border::from(BORDER_HWND.load(Ordering::SeqCst));
+                border.hide()?;
+                BORDER_HIDDEN.store(true, Ordering::SeqCst);
+            }
+
             if let Some(container) = self.monocle_container_mut() {
                 if let Some(window) = container.focused_window_mut() {
                     adjusted_work_area.add_padding(container_padding);

komorebic/src/main.rs

@@ -21,6 +21,7 @@ use color_eyre::Result;
 use fs_tail::TailedFile;
 use heck::ToKebabCase;
 use komorebi_core::resolve_home_path;
+use komorebi_core::EaseEnum;
 use lazy_static::lazy_static;
 use paste::paste;
 use sysinfo::SystemExt;
@@ -627,6 +628,25 @@ struct ActiveWindowBorderOffset {
     offset: i32,
 }
 
+#[derive(Parser, AhkFunction)]
+struct Animation {
+    #[clap(value_enum)]
+    boolean_state: BooleanState,
+}
+
+#[derive(Parser, AhkFunction)]
+struct AnimationDuration {
+    /// Desired animation durations in ms
+    duration: u64,
+}
+
+#[derive(Parser, AhkFunction)]
+struct AnimationEase {
+    /// Desired ease function for animation
+    #[clap(value_enum, short, long, default_value = "linear")]
+    ease_func: EaseEnum,
+}
+
 #[derive(Parser, AhkFunction)]
 #[allow(clippy::struct_excessive_bools)]
 struct Start {
@@ -1059,6 +1079,15 @@ enum SubCommand {
     /// Set the offset for the active window border
     #[clap(arg_required_else_help = true)]
     ActiveWindowBorderOffset(ActiveWindowBorderOffset),
+    /// Enable or disable the window move animation
+    #[clap(arg_required_else_help = true)]
+    Animation(Animation),
+    /// Set the duration for the window move animation in ms
+    #[clap(arg_required_else_help = true)]
+    AnimationDuration(AnimationDuration),
+    /// Set the ease function for the window move animation
+    #[clap(arg_required_else_help = true)]
+    AnimationEase(AnimationEase),
     /// Enable or disable focus follows mouse for the operating system
     #[clap(arg_required_else_help = true)]
     FocusFollowsMouse(FocusFollowsMouse),
@@ -1986,6 +2015,15 @@ Stop-Process -Name:whkd -ErrorAction SilentlyContinue
         SubCommand::ActiveWindowBorderOffset(arg) => {
             send_message(&SocketMessage::ActiveWindowBorderOffset(arg.offset).as_bytes()?)?;
         }
+        SubCommand::Animation(arg) => {
+            send_message(&SocketMessage::Animation(arg.boolean_state.into()).as_bytes()?)?;
+        }
+        SubCommand::AnimationDuration(arg) => {
+            send_message(&SocketMessage::AnimationDuration(arg.duration).as_bytes()?)?;
+        }
+        SubCommand::AnimationEase(arg) => {
+            send_message(&SocketMessage::AnimationEase(arg.ease_func).as_bytes()?)?;
+        }
         SubCommand::ResizeDelta(arg) => {
             send_message(&SocketMessage::ResizeDelta(arg.pixels).as_bytes()?)?;
         }